Carbureter attachment.



ilhi LNN' BYID HARROD, OF LTTLE ROCK, ARKANSAS.

CARBURETER ATTACHMENT.

recense..

Speccation of Letters Eatent.

Application filed December 7, 1917. Serial No. 206.06?.

To all who/1i t may concern:

Bc it known that l. Lim; B. Hannon, a citizen ot' the United States, anda resident of Little Rock, in the Vcounty of Pulaski and State ofArkansas, have invented certain new and useful Improvements inCarbureter Attachments, of which the following is a specification.

My invention relates to improvements in attachments t'or arbureters, andit consists in the combinations, constructions, and arrangements hereindescribed and claimed.

My invention relates more particularly to means for heL ting the aircoming through i the air intake ot' a earbureter, thereby facilitatingthe startling ot' the engine with which the carburetor is associated.

ik further object of my' invention is to provide a carburetor attachmentfor heating the air prior to its adrnixture with the vaporized fuel inwhich thev air is forced to pass through narrow highly heated passages,

thereby insuring .the heating et the air quickly and thoroughly.

further object of my invention is to provide a device ot the typedescribed7 in which the parts may be* readily assembled or replaced.

Other objects and advantages will appear in the following;specification, and the novel features of the invention will beparticularly pointed out in the appended claims.

' My invention is illustrated in the accompanying drawings forming apart et this application in which:

Figure l is a side view ot the device as applied to a carbureter.

Fig. 2 is an enlarged sectional view through the device.

.Fig 3 is an end view et the device.

Fig. 4 lis a section along` the line 4% of Fig. 2;

Fig. 5 is a section along the line 5-5 Fig. 2.

Fig'. ti is a section along the line (3-6 ot Fig. 2.

Fig. 7 is a section along the hne 77 ot Fig. 2.

Fig. 8 is a side view ot the core removed 'from the cylinder, and Y Fig.9 is a diagrammatic view showing the circuit connections.

ln carrying out my invention l provide an insulating cylinder l whichmay he made ot liber or any other suitable material. rlhe intake end otthe cylinder T. is provided with.

a flanged ring 2 which is secured in position by means of screws 3. Ascreen l is held against the end ot the cylinder l by means oi the ring.as clearly shown in Fig. 2. The opposite end of the cylinder is designedto communicate with the carbureter. ln the present instance, l haveshown the cylinder 1 as being' secured to the air intake pipe 5 of theearbureter, but obviously any suitable connection between the attachmentand the carburetor might be made. it is desirable, of course, to havethe heatingy attachment. as close to the carburetor as possible.

Disposed within the cylinder l and spaced ftheretroin, is a cylindricalcore t3 which is also made ot insulating material such as asbestos.Extending` inwardly from the ends ot the core are insulating bushingsT.. il rod 8 extends centrally through the core and through thebushings, this rod being threaded at its ends and beingprovided withnuts 9.

i t one end ot the core is a conducting plate l() which is provided withlaterally eX- tcnding' spacing lugs 10X. see Fig. 4, and which has anintegral laterally extending conducting bar l2 disposed in engagementwith the outer surface ot the core (t. The bar l2, as will be observedAfrom Fig. is provided at intervals with bolts llwhieh torni means torattaching the heating` clement, as will he explained later. it. will benoted that the bar 1S terminates short of the opposite end ot the core6.

@n the exterior otl the plate l() and in electrical contact therewith.is a backing plate lllhaving a laterally extending' slotted flange lll*which is bent at right angles and which is held in po ion by means of abinding); screw l5, see Fig. 2. rlhe plate "lei constitutes a supportingmember tor the end ot 'the core, as well as a means ot conducting'current to the plate 'l0 and bar l2.

At the opposite end ot the core is a plate 16 which. as will be seentrom Fig'. T, is provided with spacingv lugs ltif.

provided on one edge with a slotted Flange or lug lll-v which isarranged to receive a binding' screw l? t'or holding the plate inposition. lt is also provided with a latern ally extendingT ctniducting`bar 18 similar to the bar l2. and provided with bolts 13 for holding`the heating element. The plates l0, lf( and it have central openiuffsthrough which the bushings 7 pass, so tha when the nuts 9 are tightened,tee parte 1re held The plate 16 rmly Ain position while the plates 16and 10 are insulated from each other. The screws 15 andy 17 are providedwith nuts 15a and 17a, respectively, and with suitable washers forsecuring the terminals 19 and 20 of the secured at one end to thebinding screw bolts A13, as for instance, those on the 'bar 18, and

then are woundl on the core for one `and a hall? turns, being connectedto a binding screw of the opposite bar 12. Suitable in-v sulatingmaterial in the form of strips 22 is provided for insulating the wiresfrom the bars at portions between the binding screws.

Obviously, more or fewer turns may be made without departing from theinvention.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. The air coming through' theintake end of the attach ment, is strained of particles of dust, lint,and the like, and then is compelled to pass between the inner walls ofthe tube 1 and the outer surface of the core 'dwhich is provided' with aheatingfelement 22. The latter is heated by current from a battery,generator, or other suitable'source, and the air in its passagealongHthe long, narrow space becomes highly heated beiore entering thecarbureter. v

The device is simple the partal are rigidly held together. lin thisconnection, it will be noted that the plate 16 serves not only as asupport for the core, but as an electrical conductor for supplyingcurrentto the conducting bar 18. It also acts as a spacing member orcentering member, since 'when this plate is in position, the lugs willbring the core exactly in the center of the tube 1. The plate lit theopposite end, to wit:l the plate 10, serves a similar purpose, as i'aras the' spacing of the core, or rather the centering of the latter isconcerned. The binding screws 15 and 17 serve a double purpose, sincethey serve as means for retaining the core in position, and also asmeans for effecting the electrical connection. lVith this form of thedevice there is very little danger' of over-heating. The conductingmembers are amplyjlarge enough to convey the current without danger offusing, while the core and outer cylinder being made of heat redistingmaterial, are not liable to injury from an excess of current.

The inner core may be easily removed by first removing the nut from theend of the rod'dat the leithand side of Fig. 2, with .drawing thebushing, releasing the binding screw 15, and withdrawing c,the plate 1l.New, by releasing the'binding screw 17, the

in construction and core may be removed as a whole, when the tube 1 hasbeen detached from the carbu- 'the core and in electrical connectionwith said extensions, and means carried by the plates for spacing thecore from the tube and for centering it.

2. A carbureter attachment comprising an outentube of heat insulatingmaterial, an inner core of heat insulatiilig material, means for spacingthecore centrally within' the outer tube, electrical heating elementscar` ried by said inner core on the outer suriiac thereof, and bindingposts carried by the tube 'and arranged to engage conductingtextensionsof the core for holding the core, in position and for effectingelectrical connections with the heating elements of the core.

3. A carbureter attachment comprising `an outer tube of heat insulatingmaterial, an inner core of heat insulating material, conducting endplates for said core, 'binding screws carried by the outer tube andsecured to said conducting end plates for holding the core in posit-ion`conducting'strips carried by the core on the outer surface thereof, andresistance wires connected to said conducting strips.

4. A carbureter attachment comprising an outer tube of heat insulatingmaterial, an inner core of heat insulating material, conducting endplates 'for said core, binding screws carried by the outer tube andsecured to said conducting end plates for holding' the core in position,conducting strips carried by the core on the outer surface thereof,resistance wires connected to said conduct ing strips, and retainingmeans passing through the center or' the core for holding the end platesto the core, said retaining means being insulated from said end plates.

5. ln a carbureter attachment, an outer cylindricalheat insulating tube,an inner cylindrical heat insulating core, conducting end plates securedto .said core, said conducting end plates having spacing lugs forcentering the eore with respect to the tube, retaining means passingthrough the center core, said retaining means being insulated from saidend plates,

by the outer tube, electrical connections between the end plates andsaid binding posts, conducting strips connected to said end plates, andresistance wires extending between the conducting strips.

7. A carbureter attachment comprising an outer cylindrical heatinsulating tube, an inner cylindrical heat insulating core, conductingend plates for said core, said conducting end plates having lugsextending laterally and engaging` the inner surface of the tube forcentering the core, said end plates having central openings, insulatingbushings extending through the central openings in the end plates andinto the core, a retaining rod extending through said bushings and beingprovided with nuts for holding the end plates in place, a conduce ingstrip extending from each end plate along the outer surface of theco-re, wire securing means carried by said conducting strip, andresistance wires extending from one conducting strip to the other in thespace between the core and the tube.

8. A carbureter attachment comprising an outer cylindrical heatinsulating tube, an inner cylindrical heat insulating core conductingend plates for said core, said conducting end plates having lugsextending laterally and engaging the inner surface of the tube Jforcentering the core, said end plates having central openings, insulatingbushings extending through the central openings in 'the end plates andinto 'the core, a retaining rod extending through said bushings andbeing provided with nuts for holding the end plates in place, aconducting strip extending troni each end plate along the outer surfacelof the core, wire, securing means carried by said conducting strip,resistance wires extending troni one eonductinostrip to the other in thespace between tie core and the tube, one of said conducting plateshaving a lug bent laterally and slotted to receive a screw bolt, abacking plate in electrical engagement with binding posts carried A e.my'.

'of said outer (CII) the `other plate and having` a lug bent laterallyand slotted to receive a screw bolt, and screw bolts carried by the tubeand arranged to enter said slotted lugs for securing the parts inposition and for effecting electrical connection with the respectiveplates,

outer cylindrical heat insulating tube, an 1ncnd plates having lugsextending laterally land engaging the inner surface of the tube forcentering the core, said end plates having central openings, insulatingbushings extending through the central openings in the end plates andinto the core, a retaining rod extending through said bushings and beingprovided with nuts for holding the end plates in place, a conductingstrip eX- tending from each end plate along the outei surface of thecore, wire securing means carried by said conducting strip, resistancewires extending from one conducting strip to the other in the spacebetween the core and the tube, one of said conducting plates having alug bent laterally and slotted to receive a screw bolt, a backing platein elec; trical engagement with the other plate and having a lug bentlaterally and slotted to receive a screw bolt, screw bolts carried bythe tube and arranged to enter said slotted lugs for securing the partsin for effecting electrical connection with the respective plates, and astrainer at the end tube, and means for securing the strainer inposition.

l0. ln a carbureter attachment, an outer cylindrical heat insulatingtubean inner :,f'lindrical heat insulating core, conducting end platessecured to said core, said conducting end plates having spacing lugs forcentering the core with respect to the tube, retaining` means passingthrough the center of the core for holding the end plates to the tube,said retaining means being insulated from said end plates, binding postscarried by the outer tube., electrical connections between the, endplates and said hindi-g posts, and binding` posts carried by the tubefor holding the end platesl and for conducting current to said endplates.

lilNN BOYD HARROD.

earbureter attachment comprising an' ner cylindrical heat insulatingcore, conduct j ing end plates for said core, said conducting positionand

